NuMaker-HMI-N9H26
Mar. 15, 2022
Page
23
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Rev 1.00
NUMA
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9H26
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NUC
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3 NUMAKER-N9H26 AND NUDESIGN-TFT-LCD5 SCHEMATICS
3.1 NuMaker-N9H26 Audio
Figure 3-1 shows the NuMaker-N9H26 Audio circuit.
Figure 3-1 NuMaker-N9H26 Audio Circuit
RHPOUT
C23
NC/300pF
CP36
10uF
MIC_P
R49
1.2K
AGND
ESD1_9
ESD7371XV2T1G
MIC
ESD1_6
ESD7371XV2T1G
VDD50
LHPOUT
R50
1.2K
L10
NC/FB
1
2
PA_EN
ADC_MID
C25
1uF
R52
10K
ESD1_7
ESD7371XV2T1G
+
-
C19
NC/300pF
C26
NC/100pF
U10
ISD8101
1
2
3
4
5
6
7
8
9
SPN
SPP
VSS
INP
INV
VREF
CE
VD
D
GPAD
GPA0
C27
NC/100pF
MIC_N
L9
NC/FB
1
2
J2
Speak 8ohm
1
2
CB32
0.1uF
CP35
47uF
C21
1uF
C18
1uF
CB33
0.1uF
R51
0R
SPK
R53
10K
C24
1uF
C28
1uF
TP9
AGND
C20
NC/300pF
M1
6mm-Microphone
1
2
C29
0.1uF
MIC_BIAS
C22
NC/300pF
ESD1_8
ESD7371XV2T1G
R48
680
RX8
0